Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter

Abstract

Taking into account spins, we classify all two-body non-relativistic Dark Matter annihilation channels to the allowed polarization states of Standard Model particles, computing the energy spectra of the stable final-state particles relevant for indirect DM detection. We study the DM masses, annihilation channels and cross sections that can reproduce the PAMELA indications of an e+ excess consistently with the PAMELA p-bar data and the ATIC/PPB-BETS e++e- data. From the PAMELA data alone, two solutions emerge: (i) either the DM particles that annihilate into W,Z,h must be heavier than about 10 TeV or (ii) the DM must annihilate only into leptons. Thus in both cases a DM particle compatible with the PAMELA excess seems to have quite unexpected properties. The solution (ii) implies a peak in the e++e- energy spectrum, which, indeed, seems to appear in the ATIC/PPB-BETS data around 700 GeV. If upcoming data from ATIC-4 and GLAST confirm this feature, this would point to a O(1) TeV DM annihilating only into leptons. Otherwise the solution (i) would be favored. We comment on the implications of these results for DM models, direct DM detection and colliders as well as on the possibility of an astrophysical origin of the excess.

Version 4: addendum about the 2013 AMS positron data (version 5: just refinements and additions to fig. 14)

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• Minimal non-universal EW extensions of the Standard Model: a chiral multi-parameter solution
• TASI 2009 Lectures: Searching for Unexpected Physics at the LHC
• Cosmic positron and antiproton constraints on the gauge-Higgs Dark Matter
• A conservative assessment of the current constraints on dark matter annihilation from Cosmic Rays and CMB observations
• Origin Of The Cosmic Ray Positrons Observed Near Earth- Meson Decay Or Dark Matter Decay?
• Constraining dark matter capture and annihilation cross sections by searching for neutrino signature from the Earth core
• Indirect constraints on the dark matter interpretation of excess positrons seen by AMS-02
• On the use of X-ray and gamma-ray telescopes for identifying the origin of electrons and positrons observed by ATIC, Fermi, and PAMELA
• Pseudo-Familon Dark Matter
• Higgsino Dark Matter and the Cosmological Gravitino Problem
• Neutrino emission from dark matter annihilation/decay in light of cosmic $e^{\pm }$ and $\bar{p}$ data
• Reexamine the dark matter scenario accounting for the positron excess in a new cosmic ray propagation model
• Dark Matter Search at Colliders and Neutrino Floor
• Possible counterpart signal of the Fermi bubbles at the cosmic-ray positrons
• Consistent explanation for the cosmic-ray positron excess in p-wave Sommerfeld-enhanced dark matter annihilation
• Inverse Compton gamma-rays from Galactic dark matter annihilation: Anisotropy signatures
• Phenomenology of the Hidden SU(2) Vector Dark Matter Model
• Possible spectral irregularities in the AMS-02 positron spectrum
• Measurement of the antiproton/proton ratio in the few-TeV energy range with ARGO-YBJ
• Leptophilic Dark Matter at Linear Colliders
• More about the hypothesis of a new weak interaction of electromagnetic field in the hidden sector
• Explaining AMS-02 positron excess and muon anomalous magnetic moment in dark left-right gauge model
• Dark matter annihilation and non-thermal Sunyaev-Zel'dovich effect: II. dwarf spheroidal galaxy
• Multicomponent Dark Matter in the Light of CALET and DAMPE
• Triplet Dark Matter from leptogenesis
• Producing and constraining self-interacting hidden sector dark matter
• Signatures of dark matter annihilation in the light of PAMELA/ATIC anomaly